Valve



L. W. GREVE.

VALVE.

APPLICATION 51.1.50 NOV. 2 1920.

;1 215,644. Pafented Aug.15, 1922.

UNITED srAr sf rooL oolvrrAnnorcnnvnmnn, onro, a, COIRZPQBATfQN? m.

To all whom it may concern. r 4

Be it known that I, LoUIsW. GREVE, a citizen of the United States, residing e at Cleveland, in the countyof Cuyahoga and State of'Ohio, have invented a certain new and useful Improvement in Valves,'of which the following is a full, clear, and'exact descri tion.

T is invention relates to valves, and-especially to plural way. valves such as three and" four-way valves, and has'for-its object to provide certain improvements which siniplify the construction ofvalves of this character.

Further the invention aims to provide not only a simple but a highlyeflicient valve ith an inlet connection in line with the Y axis of the movable valve' member, with novel provision'in themo vable valve memher for exhaustlng flu d'pressure fromone outlet or line leadingf to the "valve" body 1 either-while the valve atthesaine time sup. plies fluid pressure to another outlet as in the case of a four-way valve, or is turned to neutral position so as to shut ofit'the flow of the fluid being transmitted as in the case of a three-way valve. l The invention may bebriefly summarized I as consistingin certain novel details 'ofco'nstruction and combinations and arrangements of parts which will be described in the specification and set forth in the appended claims. v r a In the drawings, Fig. 1 fis'a vertical sectional view of a valve embodyingmyin} vention; Fig. 2 is a view looking toward one end of the valve of Fig. 1,' the valve here shown being of the four-way type; Fig.-fl3 is a transverse sectional view through "the four-way valve; and Fig. i'is a similar view of a valve of the three-way type,

Referring now to the drawings, 10 represents the valve body. This valve body has an inlet end 11 which extends axially of the valve, and it has a number of laterally dis posed outlets which in the case of a fourway valve are three in number, thesegbeing designated in Figs. 2 and 3 as 12, 13 and 14. 'As will subsequently appear, the middle outlet 14 is an exhaust outlet and the other two outlets 12 and 13 are adapted to be connected to the parts or machines to which air or other motive fluid is to be de-' ner to receive hoseor p pes the delivery of motive fluld, butashere shown, they are threaded,'thou'gh threaded hose or pipe conganectionsare not necessary,"as other.formsof; v I

connections maybe used, s ch quick deg tachablecoupli l i p I LOUIS w. 'ennvn, or mvsmmmmo,ass-mica Tomae aea ianyrmm A 11,; v

I {Specificatirm 0fLetters Pate nt i fiatenfedf A g, 15,1922; I" p Applicationfi1edNovcniber26, 1920. SerialNo. 426,403 i In 11116 withthe inlet 1i tha is 'e tapered so that the pressure of-the fluid jwillatall times, tend to seat the'valve, and "so that wear onthe "valve oritsseat will jbe fully compensated for, and liability of looseness valve seat 15 which accommodatesjgwith aI sllding fit, a tapered hollow valve member 16, whose large end'is 'toward the inlet 11,- v

projects lthrough the valve body directly. opposite the inlet 11,.and-thisfportion is shaped.- l

to .accommoda'te a" suitable valve turning 1 y handle suchas' shown at '18 in Fig; In the .wall' of theva'lve body andfinitersectin'g the tapered"' seat *15 are narrow elongated ports 19 which'lead to the e-tavern outlets 12, 13 and These-"elongated ports-19 are adapted to-be: covered by'fthe ==tapered valve, or to be uncovered and placed in communication with ports or passage ways *in; the valve 165,. j a

i The 'valve 16;, as ammered, {Si-anew; as it is providedfwith affchamber or open-- ing, 20,: largest toward the inlet' end of the valve and gradually reducing in size asit.

extends tow'ardg'the relatively small end of A v the valve, this chamber, opening beingpeeen trically disposed oroffset with respect to the center *of' the valve, lexceptat "the inlet or v largeend offthe' valve whereit is concentric; The eccentricity is formed'by' an insethi'cshapediwallfiLzlfwhichffdrnis exteriorl f i the valve chamber 20,, and on" :the surface of the-valvejmember, an 'exhausespace'tapas;' sageway '22. Likewisethe'valve '16' has op- :posite this inset wall 21 a pair ,of. narrow elongated ports 23, one ofwhich-is adapted to be placedin registration-with thelport 19 i001 1- communicatingwlth the'outlet12, an'dthey 1 other adapted to be placed in regis'tration'd with the port 19 communicating with the outlet 13. I mighthere state that it is-not essential that two separate-ports 23 be nu;-

lized, as one large portwould suflice,but I" prefer two separate portsso as to increase the bearing that the valve has on its seat.

- The length of the exhaust passageway circumferentially considered, is such that when the valve is in the position that fluid is delivered from the inlet through the valve'to the outlet 13, as shown in F the outlet 12 is placed in communication with the exhaust outlet let so that exhaust or drainage of the fluid being transmitted take place from the outlet 12 to the exhaust 14 exteriorly of the inner 'chamber nect the outlet 12 to exhaust.

of the valve, and whenthe valve is turned to another operative position such that the other port 23 registers with the port 19 voi outlet so that the fluid is delivered from the inlet througqzh thevalveuto the outlet 12, this exhaust passageway 22 connects the outlet-13 to the exhaust outlet 14 inwhioh event pressure in the linegextendingofrom the outlet 13 is {relieved by exhaust through the outlet 14.

a This valve has three positions, tone, a neutral. or off, positlon wherein both ports 23 are, out of communication with the 1 two ports 19,.in which event the passageway 22 will communicate with. the portleading to the exhaust outletonly. The second position is such as to connect the, outlet 13 to the inlet and at thesame time to con- The third position is such as to connect the outlet 12 torthe-inlet, and at the sametime'to conmeet the outlet 13 toexhaust. 1

Thethree-way valve embodying the principle, of the tour way valve above described,

involves simply a slight simplification in the structure, as appears from Fig. ,4. In this instance the valve body here designated 24 has in addition to theiinlet, now shown,

simply two outlets 25 and 26, the outlet 25 reference to the external exhaust passage= way, here designated 29, Iandthe throw of the valve aresuch that when the valveis signature.

in on position the ,valveport .28 registers with the port leading to. the outlet 25,. in

whichfeve'nt theliuid is'xdelivei'ed' through the valveby the outlet 25, and the external vpassageway 29'is then idle, but when the valve is turned to off position the delivery port 28 of the valve is covered by the valve seat so that no flow" of motive fluid takes place through the valve, and at the same time the external passageway 29 connects the outlet 25 to the exhaust.out-- let so as to relieve the pressure. in the line which is connected to the outlet 25.

Having describedmy inventioinl claim: 1. A four-way valve .comprisinga valve body having a'valve seat, an; inlet in line therewith, and three out-lets, two being delivery outlets and the third being an exhaust outlet, a movable valve nember enlateral delivery means adapted to register with either of said delivery outlets when the valve is turned to different positions,

gaging the seat and having an opening extending fronrone end into the same with andsaid valve having'between its ends and external .tosaid opening a circumferentially extending, exhaustipassageway adapted to connect-the exhaust .outletto either delivery outlet when the other delivery outlet is connectedby thelateral delivery means to theinlet of the valve. I 1 I; 4;

,2. Avalve comprising a valve body hav ing an inlet and a plurality of outlets, and having a valve seat opposite the inlet, a

movable valve member engaging the seat and provided with an external circumferential passageway adapted to connect one outlet with. the other when the said valve is infia certain position, said valve member also having an axially; extendingchamber Y open atone end toward itheiinle't andprovided with a lateral port through which fluid may be delivered from the inlet :to one ofthe outlets, said chamber being offset with reference to vthe axis, ofthe-valve member thereby providing space for said external passageway.

Iii-testimony whereof, I hereunto aflixliny g ouls w; eenvn- 

